Despatch RBC1-50 with Protocol Plus - Manual (Page 14)

10
Chamber Door Handle
The door handle positively engages a cam with a catch in one-quarter turn. The
silicone rubber gasket provides a seal around the door as the handle is moved to the
latched position.
Damper Control
The oven is equipped with a manually adjustable
fresh air damper. The damper blade located on the
rear of the oven. The damper adjustment controls
the flow of fresh air into the chamber. If the damper
is in the full open position, the maximum amount of
fresh air is distributed into the chamber.
The exhaust has a modulating damper motor, which is done automatically by the
controller. No adjustments are necessary.
Determining Damper Settings
The optimum setting for the amount of fresh air that should be distributed into the
chamber depends on several factors. These factors include ambient environment
temperature, load conditions, load distribution, heat up and cool down rates, desired
temperature uniformity and most importantly the desired operating temperature. To
consider all of these variables at any one point in time is not practical and there are
engineering tradeoffs that should be considered. Therefore guidelines should be used
to determine the fresh air damper setting.
In general, the damper should be set so that the amount of fresh air flowing into the
chamber agrees with the desired operating temperature conditions. The following
outline shows the considerations involved with various damper position settings.
Full Closed Position
When the fresh air damper is in the full closed position, the chamber will be able to
achieve the maximum attainable heat up rates for the chamber. In addition, the
chamber will use the minimum amount of power to operate at the desired temperature.
In almost all cases, the fresh air damper should be in the full closed position in order to
efficiently operate at the maximum operating temperature for the chamber.
WARNING: This oven is not
designed for use with flammable
material. If your process
involves flammable material,
contact Despatch Industries.